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Top 10 PCB Assembly Companies in Thailand (Updated 2023)

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Printed circuit board (PCB) assembly is an important part of the electronics manufacturing supply chain. PCB assembly involves soldering and assembling electronic components onto a PCB. With its skilled engineering workforce and developed infrastructure, Thailand has emerged as a major electronics manufacturing hub in Southeast Asia. Several reputed PCB assembly companies have set up manufacturing facilities to cater to the electronics sector in Thailand.

This article provides a list of the top 10 PCB assembly companies in Thailand as of 2023. The companies are ranked based on factors like experience, capability, quality, certifications, and customer feedback.

Top 10 PCB Assembly Companies in Thailand

1. Asteelflash

With over 30 years of experience, Asteelflash is one of the leading EMS companies in Thailand. It has an extensive infrastructure with over 55 manufacturing sites across Asia, Europe, and the Americas. Asteelflash offers end-to-end electronics manufacturing services including PCB assembly, system assembly, testing, and box build services. The company serves automotive, industrial, telecom, medical, and other sectors.

Key facts:

  • Founded: 1999
  • Headquarters: France
  • Locations in Thailand: Chonburi, Ayutthaya
  • Certifications: ISO 9001, ISO 14001, ISO 13485

2. Fabrinet

Founded in 1999, Fabrinet provides advanced optical, electromechanical, and electronic manufacturing services. Its manufacturing facilities in Thailand offer automated SMT production lines, advanced testing capabilities, and system integration services. The company serves several industries like automotive, medical, industrial lasers, telecom, and data centers.

Key facts:

  • Founded: 1999
  • Headquarters: Thailand
  • Locations in Thailand: Chonburi, Ayutthaya, Pathumthani
  • Certifications: ISO 9001, ISO 14001, ISO 13485

3. Kinpo Electronics

With over 40 years of experience in EMS, Kinpo Electronics is a major player in Thailand’s PCB assembly market. The company provides one-stop manufacturing services from PCB fabrication, component sourcing, assembly, to testing and logistics. It serves computing, networking, consumer, automotive, IoT, and other sectors.

Key facts:

  • Founded: 1973
  • Headquarters: Taiwan
  • Locations in Thailand: Bangkok, Chachoengsao
  • Certifications: ISO 9001, ISO 14001, TL 9000

4. Cal-Comp Electronics

Part of the Cal-Comp Group, Cal-Comp Electronics specializes in high-mix, low to medium volume PCB assembly. It offers SMT, thru-hole assembly, box build, testing, and turnkey solutions. The company serves the telecom, automotive, industrial, and medical sectors.

Key facts:

  • Founded: 1968
  • Headquarters: Thailand
  • Locations in Thailand: Ayutthaya, Pathumthani
  • Certifications: ISO 9001, ISO 14001, IATF 16949

5. Nam Tai Property

Nam Tai Property (formerly Nam Tai Electronics) provides manufacturing and testing services for consumer electronics and telecommunication products. The company has SMT lines capable of 01005 component placement and offers in-circuit, functional, reliability, and environmental testing services.

Key facts:

  • Founded: 1975
  • Headquarters: Shenzhen, China
  • Locations in Thailand: Bangkok
  • Certifications: ISO 9001, ISO 14001, TL 9000

6. Benchmark Electronics Thailand

Benchmark provides integrated design, product lifecycle management, and electronics manufacturing services. The company offers quick-turn protoyping, low-volume to high-volume production, and aftermarket services. Benchmark serves the aerospace, defence, medical, and industrial markets globally.

Key facts:

  • Founded: 1979
  • Headquarters: Texas, USA
  • Locations in Thailand: Ayutthaya
  • Certifications: ISO 9001, AS9100, ISO 13485

7. Flextronics

Flextronics is one of the leading global EMS companies with over 100 manufacturing sites and design centers worldwide. The company offers end-to-end supply chain solutions including PCB assembly, testing, system integration, and logistics services. It serves the automotive, medical, industrial, and aerospace sectors.

Key facts:

  • Founded: 1990
  • Headquarters: Singapore
  • Locations in Thailand: Chonburi
  • Certifications: ISO 9001, ISO 14001, ISO 13485

8. Celestica

Celestica is a $6 billion revenue EMS company serving aerospace, industrial, healthcare, smart energy, and other complex end markets. Celestica Thailand offers advanced SMT production, test development, precision machining, system assembly, order fulfillment and after-market services.

Key facts:

  • Founded: 1994
  • Headquarters: Toronto, Canada
  • Locations in Thailand: Laem Chabang
  • Certifications: ISO 9001, ISO 13485, AS9100

9. Venture Electronics

Venture specializes in high-mix low-volume and medium-volume PCB assembly production. Its offerings include SMT, automated thru-hole assembly, test development, box build and product integration. Venture serves networking, telecom, medical, industrial automation sectors globally.

Key facts:

  • Founded: 1984
  • Headquarters: Singapore
  • Locations in Thailand: Chachoengsao
  • Certifications: ISO 9001, ISO 13485, ISO 14001

10. Hana Microelectronics

through-hole assembly process

Hana Microelectronics is an EMS company specializing in high-reliability PCB assembly. The company offers manufacturing and testing services for electronics modules and systems serving aerospace, industrial, medical, and automotive sectors.

Key facts:

  • Founded: 1978
  • Headquarters: Thailand
  • Locations in Thailand: Ayutthaya
  • Certifications: ISO 9001, ISO 14001, IATF 16949

Factors Considered for Ranking

The PCB assembly companies in Thailand were evaluated based on several parameters to rank them:

Experience: Companies with longer presence and experience in electronics manufacturing are generally more reliable partners.

Capability: Advanced production capabilities like SMT lines, automated assembly, testing facilities etc. allow companies to offer high-quality manufacturing services.

Quality: Quality certifications like ISO 9001 and industry-specific certifications demonstrate a company’s quality commitment.

Customer Base: Companies serving leading brands and customers indicate proven capabilities to meet rigorous quality and reliability standards.

Technical Expertise: Companies with qualified engineers, manufacturing and quality experts inspire confidence in technical capabilities.

Facilities: Modern manufacturing facilities with advanced equipment, cleanrooms etc. enable high-quality PCB assembly.

Benefits of Outsourcing PCB Assembly to Thailand

There are several benefits to outsourcing PCB assembly to Thailand:

Skilled Workforce: Thailand has a skilled and educated engineering workforce supporting its robust electronics manufacturing industry.

Production Scalability: Thai EMS companies offer flexible production capacity that can be scaled up or down to meet changing demand.

Cost Savings: Thailand provides competitive cost advantages over other electronics manufacturing hubs.

Regional Access: Thailand’s strategic location facilitates exports and regional distribution across Asia.

Quality and Compliance: Thai EMS companies adhere to global quality standards and manufacturig regulations.

Strong Infrastructure: Thailand has a developed infrastructure and supply chain ecosystem supporting electronics manufacturing.

Government Support: Thailand offers incentives, tax breaks and favorable policies to promote electronics manufacturing.

Key Considerations for Selecting a PCB Assembly Partner

Online PCB assembly quote

Here are some key factors to consider when selecting a PCB assembly partner in Thailand:

Technical Capability: Evaluate production capabilities, component sourcing, engineering skills, testing infrastructure, software and automation.

Quality Systems: Review quality certifications, process controls and documentation practices.

Manufacturing Facilities: Assess cleanroom standards, environmental controls, material handling and storage, equipment maintenance.

Customer Service: Gauge responsiveness, program management, continuous improvement practices and problem resolution processes.

Logistics and Supply Chain: Analyze part sourcing, inventory management, shipping and logistics infrastructure.

Proximity and Access: Consider travel time for visits, ease of collaboration and alignment of time zones.

Cost Factors: Compare pricing models, minimum order quantities, and tooling and setup charges.

Communication: Evaluate language capabilities, access to engineering contacts and frequency of updates.

Value-Added Services: Determine needs for design support, product testing, regulatory compliance, etc.

Security: Review cybersecurity, data protection, and facility access control measures.

Continuity Planning: Verify disaster recovery plans, insurance safeguards, and financial stability.


Thailand has established itself as a major hub for electronics manufacturing and PCB assembly in the Asia Pacific region. The PCB assembly service providers in Thailand offer advanced technological capabilities, skilled workforce, cost advantages, quality, certifications and favorable government policies. Companies looking to outsource PCB assembly to Thailand can partner with reputed EMS companies like Asteelflash, Fabrinet, Kinpo Electronics, Cal-Comp Electronics and others outlined in this article after carefully evaluating their capabilities. With its strong infrastructure, developed supply chain and continuous government support, Thailand will continue to be an attractive destination for electronics and PCB assembly manufacturing.

Frequently Asked Questions

Q1. What are the key advantages of outsourcing PCB assembly to Thailand?

Some of the main advantages are:

  • Access to skilled engineering talent
  • Production scalability
  • Cost savings
  • Quality manufacturing
  • Developed infrastructure
  • Strategic location with easy access to Asian markets
  • Strong electronics component supply chain

Q2. What certifications should a good PCB assembly company have?

Some of the key certifications to look for include:

  • ISO 9001 – Quality Management System
  • ISO 13485 – Medical Devices Quality
  • IATF 16949 – Automotive Quality
  • AS9100 – Aerospace Quality Management
  • ISO 14001 – Environmental Management
  • TL 9000 – Telecom Quality Management

Q3. What production capabilities should PCB assembly companies have?

Leading PCB assembly companies should have:

  • SMT equipment for component placement
  • Selective and wave soldering
  • Conformal coating
  • Press-fit technology
  • Box-build assembly
  • Functional, environmental and reliability testing

Q4. How to evaluate the quality management of a PCB assembly company?

Look for aspects like:

  • Quality certifications
  • Documentation processes
  • Traceability systems
  • Process change control
  • Corrective action procedures
  • Staff training on quality
  • Statistical process control
  • Quality auditing mechanisms

Q5. What questions should you ask PCB assembly providers before selection?

Some key questions would include:

  • What are your quality certifications?
  • What is your experience in my industry sector?
  • What engineering and manufacturing capabilities do you have?
  • How do you ensure quality control?
  • How will you handle component sourcing?
  • What is your capacity scalability?
  • What logistics and inventory management do you offer?
  • What documentation and reporting will be provided?
  • How will you ensure on-time delivery?

In terms of Printed Circuit Board assembly and production volume in the whole world, China stands at the very top, accounting for 52% of the PCB “pie.” Taiwan comes second at 11.5%, South Korea third at 10.8, and Japan comes in at fourth place at 8%. Finally, in fifth place is where we find Vietnam and Thailand, which take up 6.7% of the Printed Circuit Board market. But how has Thailand made it to PCBs’ top 6 producers and assemblers?

PCB Assembly Thailand is one of the fastest-growing PCB assembly places. They are very eco-friendly, using water-based solder with non-hazardous materials such as lead-free and RoHS compliant. These factors contribute to their rapid growth and popularity among both customers and suppliers alike.

Thailand, as one of the leading Printed Circuit Board Assemblers

Thailand has been making impressive strides, technology-wise, over the past couple of years. As per the 21st century, this country has been able to produce complex technologies and assemble advanced products that include PCBs and microwaves.

Multiple Printed Circuit Board assembly companies exist all over Thailand, especially in Bangkok, making it easy to find a manufacturer to do the job.

How does the Printed Circuit Board Assembly process take place in Thailand?

If you are a client looking to assemble your Printed Circuit Board in Thailand, you can opt to do it all by yourself, which is pretty pricey. Or you can simply opt to utilize a knowledgeable and experienced manufacturer through deals such as:

–          Turnkey assembly and,

–          Partial Turnkey assembly

Turnkey Assembly

Turnkey is an affordable electronics assembly solution that offers an efficient way for you to build and test your Printed Circuit Board. What’s more, Turnkey utilizes the shortest lead time possible, giving you more time to boost your product’s sales.

For turnkey to work, you should produce PCB files or basically your PCB’s design. After validating your design, you then should hand the design over to a manufacturing company in the form of Gerber Files Format. The manufacturer then works on the PCB and gives back a finished product.

While in the Production Phase, Thailand manufacturers can opt to utilize the following technologies:

Through-Hole PCB Assembly

In this PCB assembly technique, the manufacturer gets to mount and solder through-Hole components onto an empty circuit board.

Surface Mount Technology

In Surface Mount Technology (SMT), the manufacturer directly mounts electrical components onto a Print circuit board. After mounting the electrical components, the manufacturer utilizes solder to bind the component with the circuit board. As a result, SMT assembly requires state-of-the-art equipment, which present in most companies in Thailand.

Ball Grid Array

BGA assembly technology involves the utilization of tiny lead balls. These lead balls make direct contact with the circuit board completing a circuit while at the same time taking up less space as compared to other methods.

Mixed Tech

The mixed Technology assembly simply combines Through-Hole and SMT technology to generate a hybrid assembly process.

Partial Turnkey assembly

In this process, the customer has to participate in the assembly process. They do so by providing the Print Circuit board design and components to make the PCB. The manufacturer then materializes the ideas using the provided data and materials.

To find out whether a company in Thailand is offering these options, you can always review the company online. After going through the company’s data, you can then opt to utilize the company for your project or not.

Printed Circuit Board Assembled in Thailand

Single-sided printed circuit boards

These are circuit boards that consists of one conductive copper layer. The copper layer is found on top of the substrate, and components are attached to this surface.

Double-sided printed circuit boards

A Double-sided Printed Circuit Board features two thin layers (one on the top and another on the bottom of the board) of a conductive component, such as copper.

Multilayer Printed Circuit Boards                    

These boards bear more than just two copper layers. Generally, any PCB with more than two conductive layers falls under this category.

Rigid Printed Circuit Board

These are circuit board PCBs made out of inflexible components, making them inflexible.

Flex Printed Circuit boards

These are circuit boards made out of flexible material, making them flexible too.

Rigid-Flex Printed Circuit Boards

A Rigid-Flex Printed Circuit Board is a hybrid PCB that combines the feature of a rigid and flexible Printed Circuit Board.

Aluminum PCB

These are PCBs with an efficient dielectric metal base that helps in heat transfer. Due to this feature, these PCBs can eliminate issues that arise from the maintenance and management of fragile ceramics.

Getting the Right manufacturer in Thailand to assemble your Printed Circuit Board

Since there are many manufacturers in Thailand, you can opt to filter them out to gain the perfect manufacturer for your project. To do so, you can utilize the following plan:

Check on the Manufacturer’s Customization Qualifications

To check on the manufacturer’s customization services qualification, you can simply download the company’s details online. After downloading the details, check on the customization options that they offer. If the customization services they offer fit your project you can pick the manufacturer. If not, you can move on to the next manufacturer.

Experience Factor

An experienced assembler is bound to produce high-quality PCBs. Therefore, you should check on the assembler’s experience. You can simply head on to the internet and check whether the assembler is well established. If the assembler is well established that that is a green light.


Cost is another factor that you should consider. To find out more about the price factor, you can simply contact the manufacturer, and they can clarify this factor.


Ensure that the manufacturer that you select puts quality above all things.


Check on the manufacturer’s support system. The manufacturer should be able to communicate progress easily.


Thailand is slowly working its way up the ladder of PCB assembly. As per the 21st century, you can get all types of Print circuit boards from this country ranging from a multilayer PCB to aluminum PCBs. Therefore, if you are looking for quality, you can try out the Thailand market, and you will not regret it.




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